How we see colors - white Hearing • Sound waves go...

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How we see colors Trichromatic theory o Each type of cone responds to each primary color of light o All other colors can be detected by combining the firing rates of the cones that are responsive to these three colors. o Evidence for: color deficient vision. o Evidence against: flag demo, tiring out cones. Opponent-Process theory o The visual system treats pairs of colors as opposites (red vs. green, yellow vs. blue, white vs. black) Combination: Occipital lobe takes input from which cones are firing and the firing rates of the cones(trichromatic), then interprets the pattern of input from the retina (opponent process) o Color vision may be more perceptual than sensory – depends on context, prior experience, etc. Types of color mixing Subtractive – Mixing pigments o Primary colors of pigment: red, blue and yellow. Subtracting light from mixture. End result is theoretically black Additive – mixing lights o Primary colors of light: red, blue and green, adding light to the mixture, end result is
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Unformatted text preview: white. Hearing • Sound waves go eardrum>hammer>anvil>stirrup>cochlea>nerve endings>nerves>auditory cortex of temporal lobe The chemical senses • Taste (gustation) and Smell (olfaction) • Taste: savory sensation o Papillae: “bumps” that contains the taste buds. o Taste buds: nests of taste-receptor cells • Smell: the sense of Scents o Odors come in through hair which touches the nerve endings in nasal cavity. It is very close to touching the olfactory nerves. The Tactile (touch) senses • Pressure • Temperature • Pain o The Gate-control theory of pain: If “gate” is open, then pain impulses reach the brain “gate” is closed by incoming impulses from large fibers or from the brain; opened by impulses from smaller fibers. The environment within • Kinesthesis: the sense of body position and movement of body parts; also called kinesthesia • Equilibrium: the sense of balance (vestibular sense) o Semicircular Canals...
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How we see colors - white Hearing • Sound waves go...

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